./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f08060dbae3398b272b543e174171c518a83b9b7 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 16:06:08,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 16:06:08,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 16:06:08,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 16:06:08,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 16:06:08,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 16:06:08,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 16:06:08,888 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 16:06:08,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 16:06:08,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 16:06:08,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 16:06:08,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 16:06:08,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 16:06:08,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 16:06:08,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 16:06:08,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 16:06:08,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 16:06:08,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 16:06:08,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 16:06:08,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 16:06:08,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 16:06:08,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 16:06:08,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 16:06:08,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 16:06:08,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 16:06:08,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 16:06:08,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 16:06:08,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 16:06:08,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 16:06:08,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 16:06:08,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 16:06:08,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 16:06:08,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 16:06:08,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 16:06:08,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 16:06:08,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 16:06:08,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 16:06:08,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 16:06:08,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 16:06:08,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 16:06:08,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 16:06:08,951 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 16:06:08,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 16:06:08,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 16:06:08,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 16:06:08,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 16:06:08,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 16:06:08,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 16:06:08,994 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 16:06:08,994 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 16:06:08,994 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 16:06:08,994 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 16:06:08,995 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 16:06:08,995 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 16:06:08,996 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 16:06:08,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 16:06:08,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 16:06:08,996 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 16:06:08,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 16:06:08,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 16:06:08,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 16:06:08,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 16:06:08,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 16:06:08,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 16:06:08,998 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 16:06:08,998 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 16:06:08,998 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 16:06:08,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 16:06:08,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 16:06:08,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 16:06:08,999 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 16:06:09,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 16:06:09,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 16:06:09,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 16:06:09,001 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 16:06:09,002 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f08060dbae3398b272b543e174171c518a83b9b7 [2021-08-27 16:06:09,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 16:06:09,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 16:06:09,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 16:06:09,347 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 16:06:09,347 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 16:06:09,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c [2021-08-27 16:06:09,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065ad4b3c/356b544f63a2412eb35b603d056c054e/FLAG63900fef8 [2021-08-27 16:06:09,901 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 16:06:09,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c [2021-08-27 16:06:09,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065ad4b3c/356b544f63a2412eb35b603d056c054e/FLAG63900fef8 [2021-08-27 16:06:10,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065ad4b3c/356b544f63a2412eb35b603d056c054e [2021-08-27 16:06:10,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 16:06:10,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 16:06:10,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:10,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 16:06:10,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 16:06:10,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cf5b036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10, skipping insertion in model container [2021-08-27 16:06:10,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 16:06:10,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 16:06:10,447 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c[13047,13060] [2021-08-27 16:06:10,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:10,480 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 16:06:10,529 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec2_product61.cil.c[13047,13060] [2021-08-27 16:06:10,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 16:06:10,560 INFO L208 MainTranslator]: Completed translation [2021-08-27 16:06:10,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10 WrapperNode [2021-08-27 16:06:10,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 16:06:10,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:10,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 16:06:10,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 16:06:10,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 16:06:10,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 16:06:10,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 16:06:10,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 16:06:10,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 16:06:10,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 16:06:10,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 16:06:10,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 16:06:10,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (1/1) ... [2021-08-27 16:06:10,724 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 16:06:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 16:06:10,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 16:06:10,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 16:06:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 16:06:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 16:06:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 16:06:10,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 16:06:11,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 16:06:11,763 INFO L299 CfgBuilder]: Removed 350 assume(true) statements. [2021-08-27 16:06:11,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:11 BoogieIcfgContainer [2021-08-27 16:06:11,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 16:06:11,766 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 16:06:11,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 16:06:11,769 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 16:06:11,770 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:11,770 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 04:06:10" (1/3) ... [2021-08-27 16:06:11,771 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@baf224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:11, skipping insertion in model container [2021-08-27 16:06:11,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:11,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:06:10" (2/3) ... [2021-08-27 16:06:11,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@baf224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 04:06:11, skipping insertion in model container [2021-08-27 16:06:11,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 16:06:11,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:11" (3/3) ... [2021-08-27 16:06:11,773 INFO L389 chiAutomizerObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2021-08-27 16:06:11,816 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 16:06:11,816 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 16:06:11,816 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 16:06:11,816 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 16:06:11,817 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 16:06:11,817 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 16:06:11,817 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 16:06:11,817 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 16:06:11,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:11,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:06:11,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:11,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:11,890 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:11,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:11,891 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 16:06:11,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:11,908 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 147 [2021-08-27 16:06:11,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:11,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:11,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:11,911 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:11,921 INFO L791 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 144#L-1true havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 87#L586true havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 196#L594true main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 114#L175true assume 0 != main_~tmp~1; 212#L147true ~methAndRunningLastTime~0 := 0; 199#L51true havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 153#L62-1true [2021-08-27 16:06:11,921 INFO L793 eck$LassoCheckResult]: Loop: 153#L62-1true assume !false; 158#L610true assume test_~splverifierCounter~0 < 4; 150#L611true test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 184#L619true assume !(0 != test_~tmp~5); 120#L619-1true test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 38#L629true assume !(0 != test_~tmp___0~1); 186#L629-1true test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 141#L639true assume 0 != test_~tmp___2~0; 160#L645-2true assume !(0 != ~pumpRunning~0); 83#L781true assume !(0 != ~systemActive~0); 110#L788true havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 154#L712-5true __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 223#L62true assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 153#L62-1true [2021-08-27 16:06:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:11,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 1 times [2021-08-27 16:06:11,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:11,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696665197] [2021-08-27 16:06:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:11,938 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,138 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,275 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:12,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:12,287 INFO L82 PathProgramCache]: Analyzing trace with hash 9156234, now seen corresponding path program 1 times [2021-08-27 16:06:12,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:12,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579087529] [2021-08-27 16:06:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:12,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,300 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,307 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:12,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:12,309 INFO L82 PathProgramCache]: Analyzing trace with hash 842452740, now seen corresponding path program 1 times [2021-08-27 16:06:12,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:12,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761664306] [2021-08-27 16:06:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:12,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:12,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:12,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761664306] [2021-08-27 16:06:12,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761664306] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:12,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:12,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 16:06:12,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222259150] [2021-08-27 16:06:12,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 16:06:12,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-27 16:06:12,560 INFO L87 Difference]: Start difference. First operand has 226 states, 225 states have (on average 1.511111111111111) internal successors, (340), 225 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:12,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:12,725 INFO L93 Difference]: Finished difference Result 226 states and 329 transitions. [2021-08-27 16:06:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 16:06:12,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 226 states and 329 transitions. [2021-08-27 16:06:12,729 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:06:12,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 226 states to 219 states and 322 transitions. [2021-08-27 16:06:12,734 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 219 [2021-08-27 16:06:12,735 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 219 [2021-08-27 16:06:12,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 322 transitions. [2021-08-27 16:06:12,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:12,737 INFO L681 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:12,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 322 transitions. [2021-08-27 16:06:12,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2021-08-27 16:06:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 219 states have (on average 1.4703196347031964) internal successors, (322), 218 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 322 transitions. [2021-08-27 16:06:12,767 INFO L704 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:12,767 INFO L587 BuchiCegarLoop]: Abstraction has 219 states and 322 transitions. [2021-08-27 16:06:12,767 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 16:06:12,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 322 transitions. [2021-08-27 16:06:12,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 145 [2021-08-27 16:06:12,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:12,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:12,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:12,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:12,770 INFO L791 eck$LassoCheckResult]: Stem: 688#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 654#L-1 havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 610#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 611#L594 main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 637#L175 assume 0 != main_~tmp~1; 638#L147 ~methAndRunningLastTime~0 := 0; 684#L51 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 520#L62-1 [2021-08-27 16:06:12,771 INFO L793 eck$LassoCheckResult]: Loop: 520#L62-1 assume !false; 661#L610 assume test_~splverifierCounter~0 < 4; 658#L611 test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 659#L619 assume !(0 != test_~tmp~5); 549#L619-1 test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 538#L629 assume !(0 != test_~tmp___0~1); 540#L629-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 653#L639 assume 0 != test_~tmp___2~0; 636#L645-2 assume !(0 != ~pumpRunning~0); 574#L781 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 606#L865 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 613#L839-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 576#L813-3 assume !(0 == ~pumpRunning~0); 496#L788 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 633#L712-5 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 662#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 520#L62-1 [2021-08-27 16:06:12,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:12,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 2 times [2021-08-27 16:06:12,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:12,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566290067] [2021-08-27 16:06:12,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:12,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,828 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:12,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:12,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1236370745, now seen corresponding path program 1 times [2021-08-27 16:06:12,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:12,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267365491] [2021-08-27 16:06:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:12,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 16:06:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 16:06:12,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 16:06:12,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267365491] [2021-08-27 16:06:12,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267365491] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 16:06:12,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 16:06:12,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 16:06:12,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924731819] [2021-08-27 16:06:12,966 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 16:06:12,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 16:06:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 16:06:12,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 16:06:12,968 INFO L87 Difference]: Start difference. First operand 219 states and 322 transitions. cyclomatic complexity: 105 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 16:06:13,106 INFO L93 Difference]: Finished difference Result 218 states and 304 transitions. [2021-08-27 16:06:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 16:06:13,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 218 states and 304 transitions. [2021-08-27 16:06:13,110 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-08-27 16:06:13,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 218 states to 218 states and 304 transitions. [2021-08-27 16:06:13,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2021-08-27 16:06:13,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2021-08-27 16:06:13,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 218 states and 304 transitions. [2021-08-27 16:06:13,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 16:06:13,123 INFO L681 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:13,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states and 304 transitions. [2021-08-27 16:06:13,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-08-27 16:06:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 218 states have (on average 1.3944954128440368) internal successors, (304), 217 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 16:06:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 304 transitions. [2021-08-27 16:06:13,141 INFO L704 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:13,141 INFO L587 BuchiCegarLoop]: Abstraction has 218 states and 304 transitions. [2021-08-27 16:06:13,141 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 16:06:13,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 304 transitions. [2021-08-27 16:06:13,144 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 148 [2021-08-27 16:06:13,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 16:06:13,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 16:06:13,146 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:13,146 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 16:06:13,146 INFO L791 eck$LassoCheckResult]: Stem: 1095#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(31);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string31.base, #t~string31.offset := #Ultimate.allocOnStack(30);call #t~string32.base, #t~string32.offset := #Ultimate.allocOnStack(9);call #t~string33.base, #t~string33.offset := #Ultimate.allocOnStack(21);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string40.base, #t~string40.offset := #Ultimate.allocOnStack(30);call #t~string41.base, #t~string41.offset := #Ultimate.allocOnStack(9);call #t~string42.base, #t~string42.offset := #Ultimate.allocOnStack(25);call #t~string51.base, #t~string51.offset := #Ultimate.allocOnStack(13);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string53.base, #t~string53.offset, 1);call write~init~int(77, #t~string53.base, 1 + #t~string53.offset, 1);call write~init~int(101, #t~string53.base, 2 + #t~string53.offset, 1);call write~init~int(116, #t~string53.base, 3 + #t~string53.offset, 1);call write~init~int(104, #t~string53.base, 4 + #t~string53.offset, 1);call write~init~int(58, #t~string53.base, 5 + #t~string53.offset, 1);call write~init~int(0, #t~string53.base, 6 + #t~string53.offset, 1);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(5);call write~init~int(67, #t~string55.base, #t~string55.offset, 1);call write~init~int(82, #t~string55.base, 1 + #t~string55.offset, 1);call write~init~int(73, #t~string55.base, 2 + #t~string55.offset, 1);call write~init~int(84, #t~string55.base, 3 + #t~string55.offset, 1);call write~init~int(0, #t~string55.base, 4 + #t~string55.offset, 1);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string57.base, #t~string57.offset, 1);call write~init~int(75, #t~string57.base, 1 + #t~string57.offset, 1);call write~init~int(0, #t~string57.base, 2 + #t~string57.offset, 1);call #t~string59.base, #t~string59.offset := #Ultimate.allocOnStack(2);call write~init~int(41, #t~string59.base, #t~string59.offset, 1);call write~init~int(0, #t~string59.base, 1 + #t~string59.offset, 1);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(13);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string68.base, #t~string68.offset, 1);call write~init~int(110, #t~string68.base, 1 + #t~string68.offset, 1);call write~init~int(0, #t~string68.base, 2 + #t~string68.offset, 1);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string70.base, #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 1 + #t~string70.offset, 1);call write~init~int(102, #t~string70.base, 2 + #t~string70.offset, 1);call write~init~int(0, #t~string70.base, 3 + #t~string70.offset, 1);call #t~string72.base, #t~string72.offset := #Ultimate.allocOnStack(7);call write~init~int(44, #t~string72.base, #t~string72.offset, 1);call write~init~int(80, #t~string72.base, 1 + #t~string72.offset, 1);call write~init~int(117, #t~string72.base, 2 + #t~string72.offset, 1);call write~init~int(109, #t~string72.base, 3 + #t~string72.offset, 1);call write~init~int(112, #t~string72.base, 4 + #t~string72.offset, 1);call write~init~int(58, #t~string72.base, 5 + #t~string72.offset, 1);call write~init~int(0, #t~string72.base, 6 + #t~string72.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(3);call write~init~int(79, #t~string74.base, #t~string74.offset, 1);call write~init~int(110, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 2 + #t~string74.offset, 1);call #t~string76.base, #t~string76.offset := #Ultimate.allocOnStack(4);call write~init~int(79, #t~string76.base, #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 1 + #t~string76.offset, 1);call write~init~int(102, #t~string76.base, 2 + #t~string76.offset, 1);call write~init~int(0, #t~string76.base, 3 + #t~string76.offset, 1);call #t~string78.base, #t~string78.offset := #Ultimate.allocOnStack(3);call write~init~int(41, #t~string78.base, #t~string78.offset, 1);call write~init~int(32, #t~string78.base, 1 + #t~string78.offset, 1);call write~init~int(0, #t~string78.base, 2 + #t~string78.offset, 1);call #t~string80.base, #t~string80.offset := #Ultimate.allocOnStack(2);call write~init~int(10, #t~string80.base, #t~string80.offset, 1);call write~init~int(0, #t~string80.base, 1 + #t~string80.offset, 1);~methAndRunningLastTime~0 := 0;~cleanupTimeShifts~0 := 4;~head~0.base, ~head~0.offset := 0, 0;~waterLevel~0 := 1;~methaneLevelCritical~0 := 0;~pumpRunning~0 := 0;~systemActive~0 := 1; 1001#L-1 havoc main_#res;havoc main_#t~ret9, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 1002#L586 havoc valid_product_#res;havoc valid_product_~retValue_acc~5;havoc valid_product_~retValue_acc~5;valid_product_~retValue_acc~5 := 1;valid_product_#res := valid_product_~retValue_acc~5; 1083#L594 main_#t~ret9 := valid_product_#res;main_~tmp~1 := main_#t~ret9;havoc main_#t~ret9; 917#L175 assume 0 != main_~tmp~1; 918#L147 ~methAndRunningLastTime~0 := 0; 1088#L51 havoc test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_~splverifierCounter~0, test_~tmp~5, test_~tmp___0~1, test_~tmp___1~0, test_~tmp___2~0;havoc test_~splverifierCounter~0;havoc test_~tmp~5;havoc test_~tmp___0~1;havoc test_~tmp___1~0;havoc test_~tmp___2~0;test_~splverifierCounter~0 := 0; 1089#L62-1 [2021-08-27 16:06:13,146 INFO L793 eck$LassoCheckResult]: Loop: 1089#L62-1 assume !false; 1112#L610 assume test_~splverifierCounter~0 < 4; 1111#L611 test_~tmp~5 := test_#t~nondet46;havoc test_#t~nondet46; 1072#L619 assume !(0 != test_~tmp~5); 930#L619-1 test_~tmp___0~1 := test_#t~nondet47;havoc test_#t~nondet47; 931#L629 assume !(0 != test_~tmp___0~1); 1011#L629-1 test_~tmp___2~0 := test_#t~nondet48;havoc test_#t~nondet48; 989#L639 assume 0 != test_~tmp___2~0; 991#L645-2 assume !(0 != ~pumpRunning~0); 1038#L781 assume 0 != ~systemActive~0;havoc processEnvironment_#t~ret62, processEnvironment_~tmp~8;havoc processEnvironment_~tmp~8; 1081#L865 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__methaneQuery_#t~ret61, processEnvironment__wrappee__methaneQuery_~tmp~7;havoc processEnvironment__wrappee__methaneQuery_~tmp~7; 1085#L839-1 assume !(0 != ~pumpRunning~0);havoc processEnvironment__wrappee__highWaterSensor_#t~ret60, processEnvironment__wrappee__highWaterSensor_~tmp~6;havoc processEnvironment__wrappee__highWaterSensor_~tmp~6; 1064#L813-3 assume 0 == ~pumpRunning~0;havoc isHighWaterLevel_#res;havoc isHighWaterLevel_#t~ret81, isHighWaterLevel_~retValue_acc~12, isHighWaterLevel_~tmp~10, isHighWaterLevel_~tmp___0~2;havoc isHighWaterLevel_~retValue_acc~12;havoc isHighWaterLevel_~tmp~10;havoc isHighWaterLevel_~tmp___0~2;havoc isHighWaterSensorDry_#res;havoc isHighWaterSensorDry_~retValue_acc~8;havoc isHighWaterSensorDry_~retValue_acc~8; 1065#L752-3 assume ~waterLevel~0 < 2;isHighWaterSensorDry_~retValue_acc~8 := 1;isHighWaterSensorDry_#res := isHighWaterSensorDry_~retValue_acc~8; 1051#L757-3 isHighWaterLevel_#t~ret81 := isHighWaterSensorDry_#res;isHighWaterLevel_~tmp~10 := isHighWaterLevel_#t~ret81;havoc isHighWaterLevel_#t~ret81; 1021#L984-9 assume 0 != isHighWaterLevel_~tmp~10;isHighWaterLevel_~tmp___0~2 := 0; 1022#L984-11 isHighWaterLevel_~retValue_acc~12 := isHighWaterLevel_~tmp___0~2;isHighWaterLevel_#res := isHighWaterLevel_~retValue_acc~12; 994#L990-3 processEnvironment__wrappee__highWaterSensor_#t~ret60 := isHighWaterLevel_#res;processEnvironment__wrappee__highWaterSensor_~tmp~6 := processEnvironment__wrappee__highWaterSensor_#t~ret60;havoc processEnvironment__wrappee__highWaterSensor_#t~ret60; 995#L817-3 assume !(0 != processEnvironment__wrappee__highWaterSensor_~tmp~6); 1024#L788 havoc __utac_acc__Specification2_spec__2_#t~ret7, __utac_acc__Specification2_spec__2_#t~ret8, __utac_acc__Specification2_spec__2_~tmp~0, __utac_acc__Specification2_spec__2_~tmp___0~0;havoc __utac_acc__Specification2_spec__2_~tmp~0;havoc __utac_acc__Specification2_spec__2_~tmp___0~0;havoc isMethaneLevelCritical_#res;havoc isMethaneLevelCritical_~retValue_acc~6;havoc isMethaneLevelCritical_~retValue_acc~6;isMethaneLevelCritical_~retValue_acc~6 := ~methaneLevelCritical~0;isMethaneLevelCritical_#res := isMethaneLevelCritical_~retValue_acc~6; 1100#L712-5 __utac_acc__Specification2_spec__2_#t~ret7 := isMethaneLevelCritical_#res;__utac_acc__Specification2_spec__2_~tmp~0 := __utac_acc__Specification2_spec__2_#t~ret7;havoc __utac_acc__Specification2_spec__2_#t~ret7; 1114#L62 assume !(0 != __utac_acc__Specification2_spec__2_~tmp~0);~methAndRunningLastTime~0 := 0; 1089#L62-1 [2021-08-27 16:06:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:13,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1804904775, now seen corresponding path program 3 times [2021-08-27 16:06:13,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:13,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977050509] [2021-08-27 16:06:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:13,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,175 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,208 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:13,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:13,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2082517261, now seen corresponding path program 1 times [2021-08-27 16:06:13,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:13,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50172046] [2021-08-27 16:06:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:13,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,223 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:13,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:13,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 16:06:13,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1345265593, now seen corresponding path program 1 times [2021-08-27 16:06:13,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 16:06:13,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713861898] [2021-08-27 16:06:13,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 16:06:13,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 16:06:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 16:06:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 16:06:13,351 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 16:06:56,447 WARN L207 SmtUtils]: Spent 42.81 s on a formula simplification. DAG size of input: 495 DAG size of output: 437 [2021-08-27 16:07:40,044 WARN L207 SmtUtils]: Spent 21.34 s on a formula simplification that was a NOOP. DAG size: 435 [2021-08-27 16:07:40,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 04:07:40 BoogieIcfgContainer [2021-08-27 16:07:40,158 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 16:07:40,158 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 16:07:40,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 16:07:40,159 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 16:07:40,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:06:11" (3/4) ... [2021-08-27 16:07:40,161 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 16:07:40,201 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 16:07:40,209 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 16:07:40,210 INFO L168 Benchmark]: Toolchain (without parser) took 89982.33 ms. Allocated memory was 56.6 MB in the beginning and 104.9 MB in the end (delta: 48.2 MB). Free memory was 40.7 MB in the beginning and 74.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,210 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.8 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 16:07:40,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.97 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 36.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.10 ms. Allocated memory is still 56.6 MB. Free memory was 36.5 MB in the beginning and 31.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,212 INFO L168 Benchmark]: Boogie Preprocessor took 89.14 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 27.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,212 INFO L168 Benchmark]: RCFGBuilder took 1048.90 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 27.0 MB in the beginning and 36.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,213 INFO L168 Benchmark]: BuchiAutomizer took 88391.40 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 35.8 MB in the beginning and 22.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,213 INFO L168 Benchmark]: Witness Printer took 50.78 ms. Allocated memory is still 104.9 MB. Free memory was 22.7 MB in the beginning and 74.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-08-27 16:07:40,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 46.1 MB. Free memory was 28.8 MB in the beginning and 28.8 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.97 ms. Allocated memory is still 56.6 MB. Free memory was 40.6 MB in the beginning and 36.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.10 ms. Allocated memory is still 56.6 MB. Free memory was 36.5 MB in the beginning and 31.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.14 ms. Allocated memory is still 56.6 MB. Free memory was 31.0 MB in the beginning and 27.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1048.90 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 27.0 MB in the beginning and 36.2 MB in the end (delta: -9.1 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 88391.40 ms. Allocated memory was 71.3 MB in the beginning and 104.9 MB in the end (delta: 33.6 MB). Free memory was 35.8 MB in the beginning and 22.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. * Witness Printer took 50.78 ms. Allocated memory is still 104.9 MB. Free memory was 22.7 MB in the beginning and 74.2 MB in the end (delta: -51.5 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 218 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 88.3s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 87.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 37.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 219 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 553 SDtfs, 1155 SDslu, 83 SDs, 0 SdLazy, 50 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 609]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=18797, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1d9240c0=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@42998b3f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@456f39d5=59, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@58b180be=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1ebcd337=0, NULL=0, methaneLevelCritical=0, NULL=18786, tmp=0, NULL=0, NULL=18776, NULL=18787, tmp___1=0, NULL=18782, NULL=0, NULL=18773, cleanupTimeShifts=4, NULL=18777, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@645d003d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@d4a558=0, waterLevel=1, NULL=0, NULL=0, \result=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17e9ea14=0, head=0, pumpRunning=0, retValue_acc=1, NULL=18798, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ba384ec=0, NULL=18800, tmp=1, NULL=0, NULL=0, \result=1, NULL=0, NULL=0, retValue_acc=0, NULL=0, NULL=0, NULL=18795, tmp___0=0, methAndRunningLastTime=0, NULL=18784, NULL=18783, head=0, NULL=0, NULL=18781, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@50082829=0, NULL=0, NULL=0, tmp=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a8a7316=0, tmp=0, retValue_acc=0, NULL=0, NULL=18775, NULL=18788, NULL=18774, tmp___0=0, NULL=0, NULL=18785, NULL=18792, NULL=0, NULL=0, NULL=18778, NULL=18794, tmp=0, NULL=18793, NULL=0, NULL=0, systemActive=1, NULL=0, retValue_acc=0, \result=0, NULL=0, NULL=0, NULL=0, NULL=18799, \result=0, NULL=18790, NULL=0, retValue_acc=1, tmp___0=0, NULL=18780, tmp___2=59, tmp=1, splverifierCounter=0, NULL=0, NULL=0, \result=0, NULL=18779, NULL=18789, tmp=0, NULL=18791, NULL=18796} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L45] int methAndRunningLastTime ; [L84] int cleanupTimeShifts = 4; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L669] int waterLevel = 1; [L670] int methaneLevelCritical = 0; [L774] int pumpRunning = 0; [L775] int systemActive = 1; [L166] int retValue_acc ; [L167] int tmp ; [L590] int retValue_acc ; [L593] retValue_acc = 1 [L594] return (retValue_acc); [L173] tmp = valid_product() [L175] COND TRUE \read(tmp) [L50] methAndRunningLastTime = 0 [L600] int splverifierCounter ; [L601] int tmp ; [L602] int tmp___0 ; [L603] int tmp___1 ; [L604] int tmp___2 ; [L607] splverifierCounter = 0 Loop: [L609] COND TRUE 1 [L611] COND TRUE splverifierCounter < 4 [L617] tmp = __VERIFIER_nondet_int() [L619] COND FALSE !(\read(tmp)) [L627] tmp___0 = __VERIFIER_nondet_int() [L629] COND FALSE !(\read(tmp___0)) [L637] tmp___2 = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp___2) [L781] COND FALSE !(\read(pumpRunning)) [L788] COND TRUE \read(systemActive) [L862] int tmp ; [L865] COND FALSE !(\read(pumpRunning)) [L836] int tmp ; [L839] COND FALSE !(\read(pumpRunning)) [L810] int tmp ; [L813] COND TRUE ! pumpRunning [L976] int retValue_acc ; [L977] int tmp ; [L978] int tmp___0 ; [L749] int retValue_acc ; [L752] COND TRUE waterLevel < 2 [L753] retValue_acc = 1 [L754] return (retValue_acc); [L982] tmp = isHighWaterSensorDry() [L984] COND TRUE \read(tmp) [L985] tmp___0 = 0 [L989] retValue_acc = tmp___0 [L990] return (retValue_acc); [L815] tmp = isHighWaterLevel() [L817] COND FALSE !(\read(tmp)) [L55] int tmp ; [L56] int tmp___0 ; [L708] int retValue_acc ; [L711] retValue_acc = methaneLevelCritical [L712] return (retValue_acc); [L60] tmp = isMethaneLevelCritical() [L62] COND FALSE !(\read(tmp)) [L78] methAndRunningLastTime = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 16:07:40,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...